tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 47
tmp89fm42
Manufacturer Part Number
tmp89fm42
Description
8 Bit Microcontroller
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP89FM42.pdf
(408 pages)
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RA001
2.3.6.3
base timer control register (TBTCR). The following states are maintained during the IDLE0 and SLEEP0
modes:
(1)
(2)
IDLE0 and SLEEP0 modes
The IDLE0 and SLEEP0 modes are controlled by the system control register 2 (SYSCR2) and the time
(EF) to "1", which releases IDLE1/2 and SLEEP1 modes.
SYSCR2<IDLE> remains cleared and the IDLE1/2 or SLEEP1 mode will not be started.
These modes are selected at the interrupt master enable flag (IMF). After releasing IDLE1/2 or
SLEEP1 mode, SYSCR2<IDLE> is automatically cleared to "0" and the operation mode is returned
to the mode preceding the IDLE1/2 or SLEEP1 mode.
and a reset by the voltage detection circuits. After releasing the reset, the warm-up starts. After the
warm-up is completed, the NORMAL1 mode becomes active.
• The timing generator stops the clock supply to the peripheral circuits except the time base timer.
• The data memory, the registers, the program status word and the port output latches are all held in
• The program counter holds the address of the instruction 2 ahead of the instruction which starts
Start the IDLE1/2 and SLEEP1 modes
After the interrupt master enable flag (IMF) is set to "0", set the individual interrupt enable flag
To start the IDLE1/2 or SLEEP1 mode, set SYSCR2<IDLE> to "1".
If the release condition is satisfied when it is attempted to start the IDLE1/2 or SLEEP1 mode,
Note 1: When a watchdog timer interrupt is generated immediately before the IDLE1/2 or SLEEP1 mode
Note 2: Before starting the IDLE1/2 or SLEEP1 mode, enable the interrupt request signals to be gener-
Release the IDLE1/2 and SLEEP1 modes
The IDLE1/2 and SLEEP1 modes include a normal release mode and an interrupt release mode.
The IDLE1/2 and SLEEP1 modes are also released by a reset by the
the states in effect before the IDLE0 or SLEEP0 mode was started.
the IDLE0 or SLEEP0 mode.
• Normal release mode (IMF = "0")
• Interrupt release mode (IMF = "1")
ual interrupt enable flag (EF) is "1". The operation is restarted by the instruction that follows
the IDLE1/2 or SLEEP1 mode start instruction. Normally, the interrupt latch (IL) of the inter-
rupt source used for releasing must be cleared to "0" by load instructions.
ual interrupt enable flag (EF) is "1". After the interrupt is processed, the operation is restarted
by the instruction that follows the IDLE1/2 or SLEEP1 mode start instruction.
is started, the watchdog timer interrupt will be processed but the IDLE1/2 or SLEEP1 mode will
not be started.
ated to release the IDLE1/2 or SLEEP1 mode and set the individual interrupt enable flag.
The IDLE1/2 or SLEEP1 mode is released when the interrupt latch enabled by the individ-
The IDLE1/2 or SLEEP1 mode is released when the interrupt latch enabled by the individ-
Page 33
RESET
pin, a power-on reset
TMP89FM42
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